The investigation of this incident has started, reports the ATO headquarters.

Two soldiers died and two were injured in one of the military units as a result of careless handling of weapons near Mariinka of Donetsk region. This was reported by the press center of the ATO headquarters.

"Two soldiers died and two were injured in one of the military units in ATO area near Mariinka January 2, 2017 due to violation of rules of handling a weapon on," the statement said.